Arc-light globe-holder



(No Model.)

O. A. PPLUGER.

ARC LIGHT GLOBE HOLDBR.

No. 468,412. Patented Feb. 9, 1892.

UNITED STATES PATENT OFFICE.

CHARLES A. PFLUGER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE STANDARD ELECTRIC COMPANY, OF ILINOIS.

ARC-LIGHT GLOBE-HOLDER.

SPECIFICATION forming part of Letters Patent No. 468,412, dated February 9, 1892.

Application filed April 6, 1891. Serial No. 387,839. (No model.)

To ((,ZZ wlzom it may concern:

Be it known that LCHARLES A. PFLUGER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Are-Light Globe-Holders, of which the following is a full, clear, and exact specification.

My invention relates to globe-holders and dust-guards for arc lamps, and particularly to devices combining both objects, and has for its object to provide convenient means whereby a globe may be adj ustably supported and the danger of dust and sparks and fragments of carbon falling from the lamp be avoided. It is illustrated in the accompanying drawngs, wherein- Figure 1 is a side view of the apparatus with the globe lowered. Fig. 2 is a cross-section through a portion of the same with globe raised. Fig. 3 is a detail.

Like parts are indicated by the same letters in all the figures.

A is a lower carbon secured to the clamp B in the lower-carbon holder C, which is secured to 'the side bars D of the lamp.

Secured to the portions C, preferably by screw-bolts E E, is the bar F, into the lower portion of which are screw threaded the spring-bars G G. These bars are notched at their lower ends at H I-I, so as to spring outwardly and grasp the ring J, which holds them in parallel position.

K is. a globe, which rests on the globeholder L, which is provided with a dependent portion. This dependent portion is composed of the guard M, which may or may not be provided with the slots N and with the side portions Ov O, through which the rods G G pass. At one side this globe-holdcr is secured adjustably to such rod by the set-screw P.

The use and operation of myinvention are as follows: So long as the globe is elevated in the normal position for burning the guard M must necessarily be elevated, and must remain in such position as to receive any fragments of carbon or the lower end of the lower burnt-out carbon if the same should fall from the carbon -holden The guard M may be made tight, if in any case desired, so as to contain the dust and carbon fragments. When the lamp is to be trimrncd, the globe is lowered by releasing the set-screw P and permitting the globc-holder to descend upon the ring J, as indicated in Fig. l, where it will securely rest, the lower carbon being thus exposed below, and it may now be removed and another be substituted in its stead. Thus the lower carbon is only exposed when it'is to be trimmed and when the globe is to belowered, and at all other times the aperture through which the carbon is introduced from below is entirely closed, nor can it be opened when out of order,except when the globe is lowered orleft out of place, a condition which would be immediately obscrved and corrected. Of course if the lamp were made so that the carbons should be introduced from above the carbonprotection device would perhaps not be necessary.

I claim- 1. The combination of a inovable globeholder with two rods downwardly depending from the lower-carbon support and passing through the holder, and securing devices whereby such holder is adj ustably secured to the rods, and a removable rest at the lower ends of such rods to receive the globe-holder.

2. The combination of a globe-holder with two rods rigid on the lamp-frame, aset-screw to adj ustably secure the holder on the rods, and a ring-support in the lower end of such rod, said ring-support longer in one direction than the other and said rods notched and adapted to spring outward to engage the ring.

3. The combination of avertically-movable globe-holder with two rods downwardly depending from the lower-carbon support and passing through the holder, securing devices whereby such holder is adj ustably secured upon the rods, and a pocket connected with the holder and between the rods.

4. In an are-lamp globe-holder, the combination of two downwardly-depending rods fixedly connected with the lower-carbon support and detachably secured together at their lower ends with a globe-holding plate through which such rods pass and which moves upon Such rods and means forolzunping the said rods and means for clamping the said globefzlobe-holr to such rods at any desired posholder to such rods at any desired pos1t1on, [o

tion. said rods removably seoured to the lower-car- 5. In an' arc-1amp gleb-holder, the coxnbibon support.

5 nation of two downwardly-dependng rods Z CHARLES A. PFLUGER. fixedly connectedrrwith the lower-carbon sup- Witnesses: port with a globe-holding' plate through which CELESTE P. CHAPMAN, such rods pass and whieh moves upon such I-IARRIET M. DAY. 

